49MJ Datasheet, PDF (1/1 Pages) EUROQUARTZ limited – SURFACE-MOUNT CRYSTALS

SURFACE-MOUNT CRYSTALS
49MJ CRYSTALS
Surface-mount HC49
DESCRIPTION
49MJ crystals are standard HC49 crystals with formed leads, fitted with a
clip to enable surface-mount PCB assembly. The crystal therefore offers
the ease of surface-mount assembly with the technical benefit of close-
tolerance crystal parameters achievable by the use of circular AT-Cut
crystal blanks in the HC49 crystal.
OUTLINES AND DIMENSIONS
FEATURES
· Surface mount version of HC49
· Available with close tolerances
· Fully customisable for application requirements
· Customised parts readily available
· Industry-standard package
· Low installed cost
GENERAL SPECIFICATION
Frequency Range:
Oscillation Mode:
Calibration Tolerance at 25ºC
SL-Cut (<1.3MHz):
AT-Cut (>1.3MHz):
Frequency stability over temp
SL-Cut (<1.3MHz):
AT-Cut (>1.3MHz):
Shunt Capacitance (C0):
Load Capacitance (CL):
Ageing:
Drive level:
Holder:
Holder Variants:
Supply format:
1.0MHz to 200MHz
See table
from ±50ppm
from ±3ppm
from ±100ppm -10° to +60°C
from ±3ppm 0° to +50°C
See table for details
4pF typical, 7pF maximum
Series or from 8pF to 32pF
(Customer to specify CL)
±3ppm max 1st year,
±1ppm max per year after
1mW maximum
Resistance-weld, hermetic seal
H49MJ or 49TMJ
(See outline drawing)
Bulk pack (standard)
or tape (Ammo-Pak)
FREQUENCY STABILITY OVER TEMPERATURE
Operating
Temp. °C
Temperature Stability (ppm)
±3 ±5 ±7.5 ±10 ±15 ±20 ±30
0° to +50°
ü
ü
ü
ü
ü
üü
-10° to +60°
ü
ü
ü
ü
ü
ü
ü
-20° to +70°
X
ü
ü
ü
ü
üü
-30° to +80°
X
X
X
ü
ü
üü
-40° to +90°
X
X
X
X
ü
üü
-55° to +105° X
X
X
X
X
üü
OSCILLATION MODE & ESR
Frequency
(MHz)
1.0 ~ 1.3
2.01~3.0
3.01~3.2
3.21~3.5
3.51~3.9
3.91~5.0
5.01~7.0
7.01~10.0
10.0~30.0
30.01~45.0
24.0~100
80.0~160
110~200
Crystal Cut
Oscillation Mode
SL
AT Fund.
AT Fund.
AT Fund.
AT Fund.
AT Fund.
AT Fund.
AT Fund.
AT Fund.
AT Fund.
AT 3rd OT
AT 5th OT
AT 7th OT
ESR (max)
(Ohms)
5000
400
200
150
120
100
50
35
25
20
40
70
120
PART NUMBER GENERATION
49MJ crystals part numbers are derived as follows:
Example:
16.000MHz 49MJ/10/20/10/30pF/ATF
Frequency
Package - 49MJ
- 49TMJ
Calibration Tolerance at 25°C
(in ±ppm)
Temperature Stability
(in ±ppm)
Operating Temperature Range
(lower figure of
temperature range)
Circuit Condition
(CL in pF or SERIES)
Mode - SLF (SL-Cut, fund.)
- ATF (AT-Cut, fund.)
- AT3 (AT-Cut, 3rd overtone)
- AT5 (AT-Cut, 5th overtone)
- AT7 (AT-Cut, 7th overtone)
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: [phone] Fax: [phone] email: [e-mail] web: www.euroquartz.co.uk